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參數資料
| 型號： | 48IMP12-1212-7 |
| 元件分類： | 電源模塊 |
| 英文描述： | 2-OUTPUT 12 W DC-DC REG PWR SUPPLY MODULE |
| 文件頁數： | 4/7頁 |
| 文件大小： | 187K |
| 代理商： | 48IMP12-1212-7 |
Board Mountable
DC-DC Converters
IMP 12 Series
Edition 5/5.2000
4/7
Table 3d: Output data for triple output types
Output
.. IMP 12-051515-7
Output 1
Output 2
Output 3
Unit
Characteristics
Conditions
min
typ
max
min
typ
max
min
typ
max
Uo
Output voltage
Ui nom, Io nom
4.90
5
5.10
14.10
15
15.90
-14.10 -15
-15.90
V
Io nom
Nominal output current
Ui min...Ui max
200
1500
32
160
32
160
mA
uo
Output voltage noise
Ui nom
100
300
mVpp
(0.2...1)
Io nom
(BW = 20 MHz)
DUo U
Static line regulation
Ui min...Ui max
±2
±6
±6%
Io nom
DUo I
Static load regulation
Ui min...Ui max
±2
±6
(0.2...1)
Io nom
tr Uo I
Transient recovery time
Io nom 1/2
500
s
aUo
Temperature coefficient
Ui nom, Io nom
±0.02
%/K
fs
Switching frequency
200
kHz
Connection in Series
The outputs of one or more units can be connected in se-
ries. No suppressor diodes are required. Power-One how-
ever recommends to protect each individual output with a
Zener diode or preferably a suppressor diode, to avoid re-
verse polarity that may occur if the output voltages do not
rise simultaneously.
Connection in Parallel
The outputs of several units can be connected in parallel.
However, the use of a single unit with a higher power rating
is a better choice because of uneven power distribution
among the outputs connected in parallel. It is recom-
mended to select converters to be connected in parallel
with very small output voltage differences at full load (i.e.
<
±1%). A decoupling diode is not required but recom-
mended.
Thermal Considerations
If a converter is operated, the relationship between the am-
bient temperature
TA and the case temperature TC depends
heavily on the conditions of operation and integration into a
system. The thermal conditions are influenced by input volt-
age, output current, airflow, temperature of surrounding
components and surfaces and the properties of the printed
circuit board. The specified maximum ambient temperature
TA max is therefore only an indicative value and under practi-
cal operating conditions, the ambient temperature
TA may
be higher or lower than this value.
Caution: The case temperature
TC measured at the
Measuring point of case temperature TC (see: Mechani-
cal Data) may under no circumstances exceed the speci-
fied maximum value. The installer must ensure that un-
der all operating conditions
TC remains within the limits
stated in the table:
Temperature specifications.
SD-input
The output voltages is turned on if the SD pin is floating or a
voltage of 8...10 V DC is applied. If the voltage at the SD pin
is between –0.3 and 2 V DC, the output voltage is turned
off.
Protection Scheme
The IMP series is continuously short circuit protected by
means of input power limitation. The unit will not be dam-
aged if started up into a short circuit. After removal of the
short circuit, it will resume normal operation.
The IMP series is also no-load proof, meaning that the
regulation is still effective with no load and the output volt-
age does not rise. However, due to component tolerances,
oscillation could occur and ripple and noise can be outside
of specified values. If the converter is used in senitive elec-
tronic circuits with no-load conditions, it is recommended to
pre-load the outputs with at least 20% of the specified nomi-
nal load.
Unit 1
Unit 2
+
Uo
–
Uo
Vo+
COM
Vo–
Vo+
COM
Vo–
05090
Fig. 4
Outputs connected in series
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